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( a ) ( i ) Explain the difference between the Langmuir - Hinshelwood and Eley - Rideal mechanisms for the catalytic reaction A (
ai Explain the difference between the Langmuir Hinshelwood and Eley Rideal mechanisms for the catalytic reaction Ag Bg Cg
ii The rate of the catalytic reaction Ag Bg C g is given by the equation r k pa pb Ka pa
where r is the rate of the reaction, pa and pb the pressures of reactants A and B respectively, k is a constant and Ka is the equilibrium constant for the sorption of A Develop a reaction mechanism and suggest a ratelimiting step that satisfies the rate equation.
b The equilibrium constant b Langmuir constant for the dissociative chemisorption of hydrogen H at a certain temperature on the above Pt catalyst is equal to kPa Calculate the pressure of hydrogen H for which of the active centers of platinum will be occupied by chemisorbed hydrogen atoms Ha
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